javascript 支持页码格式的分页类_javascript技巧Jpage Demo - by funnyzak
程序员文章站
2022-04-05 09:17:37
...
前端时间因为项目需要，要对一个产品下所有的附属图片进行分页显示，没考虑ajax一张张请求，所以干脆一次性全部把图片out，然后在载入的时候进行分页，网上很多jquery,property等都实现了
但是他们插件的附属功能很多又不需要，而且没必要就为了这么一个功能区引用这个库，为速度考虑吧，当然你服务器好也行，但是其实这个效果不是必须的，但是觉的会常用，所以就包装成类了，供以后使用，也供有需要的人学习使用。
下面只是一个简单的demo,用的话自己可以在编辑页码样式，有默认的格式。不废话了，自己看吧，有注释使用说明。。。类（3kb)使用可以参照demo，不明白使用的可以留言。
以后会慢慢写一些项目开发中常遇到的问题，以及解决方案，和大家学习分享。
jpage.js
/* 排序工具 by Funny ZAk <silenceacegmail.com> 2009-8-23
"调用方式 var zp = new zakPage(参数);zp.init();
参数以此为 源内容容器，分页结果容器，导航容器，页大小,单挑内容回调函数返回li对象,每个li的样式,选择后的样式没有则为null或""
，默认起始页数,格式化页码显示格式*/
function zakPage(id,pagec,navid,pagesize,lievt,ds,ss,idx,navp){
this.obj = this;
this.pageid = id;
this.pagec = pagec;
this.navc = navid;
this.pagesize = pagesize || 7;
this.lievt = lievt || null;
this.rcount = 0;
this.pagecount = 0;
this.cpage = 1;
this.ds = ds;
if(this.ds == null){this.ds = "";}
this.ss = ss;
if(this.ss == null){this.ss = "";}
this.idx = idx;
this.navpre = navp || ["共{$pcount}页/{$rcount}条,当前第{cpage}页","首页","上一页","下一页","末页"];
}
zakPage.prototype = {
init:function(){
document.getElementById(this.pageid).style.display = "none";
this.rcount = document.getElementById(this.pageid).getElementsByTagName("li").length;
var residue = this.rcount%this.pagesize;
var nums = parseInt(this.rcount/this.pagesize);
this.pagecount = nums;
if(residue != 0){this.pagecount = nums+1;}
this.gopage(this.idx);
},
guide:function(){
var nav = document.getElementById(this.navc);
var np = this.navpre;
nav.innerHTML = np[0].replace("{$rcount}",this.rcount).replace("{$pcount}",this.pagecount).replace("{cpage}",this.cpage);
nav.appendChild(this.createa(np[1],1));
nav.appendChild(this.createa(np[2],this.cpage-1));
nav.appendChild(this.createa(np[3],this.cpage+1));
nav.appendChild(this.createa(np[4],this.pagecount));
},
createa:function(html,index){
var aa = document.createElement("a");
aa.innerHTML = html;
var o = this.obj;
aa.onclick = function(){o.gopage(index);}
return aa;
},
gopage:function(index){
if(index>this.pagecount){index=1;}
if(index<=0){index = this.pagecount;}
this.cpage = index;
var ghtml = document.getElementById(this.pagec);
ghtml.innerHTML = "";
var pages = (index-1)*this.pagesize;
var pagee = pages+this.pagesize;
if(pagee>this.rcount){pagee = this.rcount;}
for(var i=pages;i<pagee;i++){
var lil = document.createElement("li");
lil.className = this.ds;
lil.innerHTML = this.litem(i);
var sss = this.ss;
if(this.lievt !=null){
lil.lievt = this.lievt;
lil.onclick = function(){
this.lievt(this);
this.className = sss;
}
}
ghtml.appendChild(lil);
}
this.guide();
},
litem:function(index){
return document.getElementById(this.pageid).getElementsByTagName("li")[index].innerHTML;
}
}
下面是完整的测试代码，js已经包括在内
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<style type="text/css">
body {
text-align:center;
padding:20px 0 0 0;
font-size:12px;
}
a {
color:#000;
font-size:12px;
cursor:pointer;
}
ul, li {
margin:0;
padding:0;
list-style:none;
}
.contain {
margin:0 auto;
width:825px;
text-align:left;
border:1px #000 solid;
padding:5px;
height:auto;
}
li.sd a,li.sd a:link,li.sd a:visited{background-color:#000; color:#FFF; font-size:13px;}
</style>
<title>Jpage Demo - by funnyzak</title>
<script type="text/javascript" charset="gb2312">
/* 排序工具 by Funny ZAk <silenceacegmail.com> 2009-8-23
"调用方式 var zp = new zakPage(参数);zp.init();
参数以此为 源内容容器，分页结果容器，导航容器，页大小,单挑内容回调函数返回li对象,每个li的样式,选择后的样式没有则为null或""
，默认起始页数,格式化页码显示格式*/
function zakPage(id,pagec,navid,pagesize,lievt,ds,ss,idx,navp){
this.obj = this;
this.pageid = id;
this.pagec = pagec;
this.navc = navid;
this.pagesize = pagesize || 7;
this.lievt = lievt || null;
this.rcount = 0;
this.pagecount = 0;
this.cpage = 1;
this.ds = ds;
if(this.ds == null){this.ds = "";}
this.ss = ss;
if(this.ss == null){this.ss = "";}
this.idx = idx;
this.navpre = navp || ["共{$pcount}页/{$rcount}条,当前第{cpage}页","首页","上一页","下一页","末页"];
}
zakPage.prototype = {
init:function(){
document.getElementById(this.pageid).style.display = "none";
this.rcount = document.getElementById(this.pageid).getElementsByTagName("li").length;
var residue = this.rcount%this.pagesize;
var nums = parseInt(this.rcount/this.pagesize);
this.pagecount = nums;
if(residue != 0){this.pagecount = nums+1;}
this.gopage(this.idx);
},
guide:function(){
var nav = document.getElementById(this.navc);
var np = this.navpre;
nav.innerHTML = np[0].replace("{$rcount}",this.rcount).replace("{$pcount}",this.pagecount).replace("{cpage}",this.cpage);
nav.appendChild(this.createa(np[1],1));
nav.appendChild(this.createa(np[2],this.cpage-1));
nav.appendChild(this.createa(np[3],this.cpage+1));
nav.appendChild(this.createa(np[4],this.pagecount));
},
createa:function(html,index){
var aa = document.createElement("a");
aa.innerHTML = html;
var o = this.obj;
aa.onclick = function(){o.gopage(index);}
return aa;
},
gopage:function(index){
if(index>this.pagecount){index=1;}
if(index<=0){index = this.pagecount;}
this.cpage = index;
var ghtml = document.getElementById(this.pagec);
ghtml.innerHTML = "";
var pages = (index-1)*this.pagesize;
var pagee = pages+this.pagesize;
if(pagee>this.rcount){pagee = this.rcount;}
for(var i=pages;i<pagee;i++){
var lil = document.createElement("li");
lil.className = this.ds;
lil.innerHTML = this.litem(i);
var sss = this.ss;
if(this.lievt !=null){
lil.lievt = this.lievt;
lil.onclick = function(){
this.lievt(this);
this.className = sss;
}
}
ghtml.appendChild(lil);
}
this.guide();
},
litem:function(index){
return document.getElementById(this.pageid).getElementsByTagName("li")[index].innerHTML;
}
}
</script>
</head>
<body>
<div>
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<ul id="pagec">
</ul>
</div>
<div id="navs"></div>
<script type="text/javascript">
function bb(a){alert(a.innerHTML);}
var arr = ["{$rcount}record,total{$pcount}page currenpage{cpage} "," indexpage"," prevpage "," nextpage "," lastpage "];
var zp = new zakPage("jpage","pagec","navs",15,bb,null,null,4,null); //此为默认页码格式
//var zp = new zakPage("jpage","pagec","navs",15,bb,null,null,4,arr); //自定义页码格式
zp.init();
</script>
</body>
</html>